Motor for washing-machines for similar devices.



Nm 7'80y195. PATENTEB JAN. l?, 1905. G. KAKFMANN MUTR FR WASHING MAHXNES UR SMXLAR DEVIGES.

APPLIGAMON HLBD Mm m, 1904.

mn ess es zvejz for:

UNITED STATES Patented January 1'?, 1905.

PATENT OEEICE.

CARL KAMPMANN, OF MLHEIM-ON-THE-RUHR, GERMANY, ASSIGNOR TO CARL KAMPMANN, JR., G. M. B. H., OF MLI-IEIM-ON-TIIE-RUHR, GER- MANY, A FIRM.

MOTOR FOR WASHING-MACHINES OR SIMILAR DEVICES.

SPECIFICATION forming part of Letters Patent No. 780,195, dated January 17, 1905. Application led May 27, 1904. Serial No. 210,006.

To (all whom, t may concern.

Be it known that I, CARL KAMPMANN, a citizen of Germany, residing at Mlheim-on-the- Ruh r, Germany, have invented a new and Im- 5 proved Motor for Washing-Machinesor,Similar Devices, of which the following is a speciiication.

This invention relates to a motor for washing-machines and similar devices by means IO of which an oscillating movement is imparted to the shaft carrying the stirring-blades. The motor is of simple construction, occupies but a small space, and does away with gearings between piston and stirrer-shaft.

I5 In the accompanying drawings, Figure lis a side elevation, partly in section, of a washing-machine embodying my invention; Fig. 2, a vertical section through the motor on line L M, Figs. 8 and l1; Fig. 3, a vertical 2O section on line I K, Fig. 4; and Fig. f1, a horizontal section on line G H, Fig. 2.

The numeral 1 represents the casing or cylinder of the motor, which is mounted upon posts 2, projecting upwardly from the cover 3 of the washtub 3. This cover may be removable; but I prefer to aix it to the tub and to provide it with a hinged lid 4, through which the wash may be introduced. Through cylinder 1 projects a rock-shaft 18, that is extended into the tulo 3 and carries the stirringblades. (Not shown.) Within cylinder 1 there is mounted upon shaft 18 an oscillating piston 5, constructed as hereinafter described, while a radial partition 6 is secured within the cylinder by a screw 6". The partition 6 is provided with an upper perforation 7 and a lower perforation 8, adapted for the reception of the inlet-valve c' and the exit-valve e, respectively. The inlet-valve consists of a 40 disk 9, having eoniform sides and a stem 10, provided With longitudinal grooves 11. The coniform sides of disk 9 are adapted to engage coniform seats 29 8() of a valve-chamber 12, formed by an enlargement of perforation 7 and communicating with inlet-pipe 16. The

exit-valve e consists of a stem 13, having longitudinal grooves 14, and of a pair of valvedisks 15, formed on the ends of the stem.

The perforation 8 communicates with an exitpipe 17. In order to permit a quick iiow of the pressure medium, stem 13 may be recessed, as at 19.

The piston 5 is provided on each face with a pintle 24, on which turns a valve-shifter 27. This shifter is pressed outward by a spring 25, coiled around pintle 211.

The operation is as follows: The parts being in the position shown in Figs. 2 and 4 the pressure medium admitted through pipe 16 will fiow through valve-chamber 12 into 60 compartment A of the cylinder 1, so as to rotate the piston 5 in the direction of arrow D, Fig. 4. The liquid contained in compartment B of the cylinder will be discharged through the lower perforation 8 of partition 6 into exit- 65 pipe 17. W'hen piston 5 arrives at the end of its stroke, valve-shifter 27 will push valves 2,' and e to the left, so as to admit the pressure medium into the compartment B of the cylinder and cause the return stroke of the piston. During the operation of the machine the inlet-valve is by the pressure medium held tight against its seat, so that considerable pressure is required before it can be opened. Consequently the springs 25 will be com- 75 pressed to a degree sufficient to overcome the water-pressure, and hence the valves will be suddenly moved as soon as they are raised off their seat. By this strong and sudden action of the valves a full stroke of the valves is in- 8O sured, so that a stoppage of the piston in an intermediate position is avoided and a reliable operation of the motor is insured. What I claim is- A motor for washing-machines and similar devices, composed of a cylinder, an inclosed oscillating' piston, a spring-influenced valveshifter hinged to the piston, and inlet and outlet valves controlled by the shifter, substantially as specified. i

Signed by me at Dusseldorf, Germany, this 7 th day of May, 19011.

CARL KAMPMANN.

Witnesses:

WILLIAM ESSENWEIN, PETER LIEBER. 

